Prototype: Union Pacific class 600 6-axle diesel electric locomotive (so-called ALCO PA-1) of the American builder American Locomotive Company.
The locomotive has a high-performance motor. Two axles in each truck are powered. Traction tires for high pulling power. The locomotive has a warm white LED headlight. The paint scheme and lettering are finely detailed and prototypical.
The Märklin system coupler is included. There is a pilot on the front.
Length approximately 88 mm / 3-7/16".